Mathematics, 14.04.2020 04:10, tbiles99

How many different 8-digit phone numbers do not contain the digit 4? Assume that any digit in the phone number can be any of the remaining
numbers. Use the Multiplication Principle of Counting to solve the problem.

Answers: 2

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How many different 8-digit phone numbers do not contain the digit 4? Assume that any digit in the ph...